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21 Dyffryn Road, Alltwen, Pontardawe, Swansea, SA8 3BX

Estimated value

£229,000

  • Since the 2019 sale (£138,000)+66%
  • Against SA8 3BX's recent median (£230,000)0%

Newest record on this page: December 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Detached
Habitable rooms
4
From EPC
Floor area
120 m²
1292 sq ft
Energy rating
D
Score 58
Council tax
Band C
Tenure
Owner Occupied
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£229,000

  • Against its 2019 sale (£138,000)+66%
  • Against SA8 3BX's recent median (£230,000)0%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 21 Dyffryn Road is modelled from its 120 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA8 3BX. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    120 m² from the EPC lodged in June 2019

  • Sales of this home

    2 sales recorded, the latest in 2019

  • Recent sales in SA8 3BX

    5 sales, median £230,000 (2025–2024)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: December 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
PlanningNone on this homeFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

21 Dyffryn Road valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 4 July 2019Most recent

    £138,000

    +65.3%over 5 years

  2. 11 February 2014

    £83,500

Median price across the last 5 sales in SA8 3BX: £230,000 (2025–2024).

Risks

What this page doesn't show

Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks Report.
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

One time fee only - money back guarantee

Overview

About 21 Dyffryn Road

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

21 Dyffryn Road is a detached house in Pontardawe, Swansea, Swansea (SA8 3BX). It has a recorded floor area of 120 m² (around 1292 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (June 2019) shows a D (score 58), a step below the typical UK home. When first surveyed in June 2011 the rating was F, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Poor to Good and lighting went from Average to Very Good. The recommended improvements would lift it to B (score 84), a 2-band jump.

At 120 m² the property is well over the postcode median (84 m² across 18 EPCs), placing it in the larger end of the local stock. Across 2014–2019, sale prices on this property compounded at 9.8% per year. Today's modelled estimate of £229,000 sits 65.9% above the 2019 sale of £138,000. On a £-per-square-foot basis, the last sale (£107/sq ft) was about 29.3% below the postcode norm. Most recent transfer: July 2019 at £138,000.

Before you decide

Everything you need to know about 21 Dyffryn Road

The true value, the hidden risks and the full sale history, in one report.

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Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

21 Dyffryn Road's carbon output runs well above what efficient homes in the postcode produce.

Current Certificate(1 of 2)
Jun 2019

EPC Rating

A
B
C
D
D58
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
6.1 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 8 June 2029

2 years remaining

Property Improvements

Changes detected from historical EPC data

Jun 2019from Jun 2011
EPC improved fromF31toD58
Heating Controls
Prog + StatFull

Heating controls upgraded for better temperature management

Hot Water
Main (No Stat)Main System

Hot water system upgraded

Roof Insulation
InsulatedWell Insulated

Loft insulation upgraded to recommended levels

Low Energy Lighting
28%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against 21 Dyffryn Road, Alltwen, Pontardawe, Swansea, SA8 3BX, sourced from the PlanIt planning register.

21 Dyffryn Road has no planning applications on record.

A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.

On the street

Versus other Dyffryn Road homes

Four headline reads against 18 similar houses on this street, drawn from the latest EPC and Land Registry data.

21 Dyffryn Road outperforms the street on floor area by a wide margin.

Price per m²

£1,150

Street avg £1,591

Below

Floor Area

120 m²

Street avg 97 m²

Strongly above

Habitable Rooms

4 rooms

Street avg 5 rooms

Below

CO₂ Emissions

6.1 t/year

Street avg 5.2 t/year

Below
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Swansea district page.
Full Swansea report

Crime

66/mo

Falling year-on-year across the wider district.

Nearest stop

0.1 km

Tan yr Allt House — bus stop.

Nearest stops

  • Tan yr Allt HouseBus stop140m
  • Alltwen TopBus stop154m
  • Junior SchoolBus stop159m
  • Alltwen HillBus stop161m

Most reported crime locally

  • Violence & Sexual Offences384 reports48%
  • Anti-social Behaviour92 reports12%
  • Public Order87 reports11%
  • Criminal Damage & Arson63 reports8%

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

SDL Surveying

Get a survey for this property

Level 3 Building Survey

Victorian-eraDetached HouseEPC DPre-1919 build

Because the property was built before 1919, we believe a Level 3 building survey should be considered.

From £885 · Includes VAT

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£217k

1 Bryn Morgrug, Alltwen, Pontardawe

SA8 3DG

4 bed
£209k

1 Heol Y Parc, Alltwen, Pontardawe

SA8 3BN

£255k

1 Derwen Road, Alltwen, Pontardawe

SA8 3AU

£260k

1 Clos Gwenallt, Pontardawe

SA8 3BD

£265k

1 Bryn Golau, Alltwen, Pontardawe

SA8 3AF

4 bed1 bath
£268k

1 Graig Gellinudd, Pontardawe

SA8 3HP

£283k

1 Heol Alfred Wallace, Rhos, Pontardawe

SA8 3FA

£288k

1 Heol Y Nant, Rhos, Pontardawe

SA8 3EQ

3 bed1 bath

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 21 Dyffryn Road is modelled from its 120 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA8 3BX. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 2 sales are recorded for 21 Dyffryn Road. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 21 Dyffryn Road was lodged in June 2019 at band D and is valid until June 2029. 2 certificates are on record, which shows how the home has changed.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 21 Dyffryn Road. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 12 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from SA8 3BX.
Council tax band
21 Dyffryn Road is in council tax band C. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 21 Dyffryn Road, Alltwen, Pontardawe, Swansea, SA8 3BX. Each answer is also embedded as structured data for search engines.

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